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  Piece

  Traffic analysis against the Italian navy

  Traffic analysis against the Italian navy

  Held by

  The National Archives, Kew

  Date

  1941 Jul 06-1943 Oct 29

  Reference

  HW 18/43

• Catalogue level

  Piece

  GC&CS Army and Air Force Sigint Volume VII: German Cryptographic Systems and their...

  GC&CS Army and Air Force Sigint Volume VII: German Cryptographic Systems and their Solution I by Lt Col F S Thompson

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/50

• Catalogue level

  Piece

  GC&CS Naval Cryptanalytic Studies Volume VI: Japanese Systems I by H R Foss

  GC&CS Naval Cryptanalytic Studies Volume VI: Japanese Systems I by H R Foss

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/31

• Catalogue level

  Piece

  GC&CS Naval Cryptanalytic Studies Volume XV: Japanese Strip Cyphers by F G W Bowe,...

  GC&CS Naval Cryptanalytic Studies Volume XV: Japanese Strip Cyphers by F G W Bowe, R A Carter and H R Foss

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/40

• Catalogue level

  Piece

  GC&CS Army and Air Force Sigint Volume XVII: Intelligence - Air Force - Japanese...

  GC&CS Army and Air Force Sigint Volume XVII: Intelligence - Air Force - Japanese by Lt Cmdr L A Griffiths RNVR

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/60

• Catalogue level

  Piece

  GC&CS Naval Sigint Volume XV: Contents, Sources and General Index

  GC&CS Naval Sigint Volume XV: Contents, Sources and General Index

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/25

• Catalogue level

  Piece

  GC&CS Army and Air Force Sigint Volume XVI: Intelligence - Air Force Y Service -...

  GC&CS Army and Air Force Sigint Volume XVI: Intelligence - Air Force Y Service - European by Cmdr A M S MacKenzie RNVR and Wg Cmdr E J B Rose

  Held by

  The National Archives, Kew

  Date

  1924 Jun 11 - 1945 Aug 30

  Reference

  HW 43/59

• Catalogue level

  Piece

  GC&CS Naval Cryptanalytic Studies Volume XIV: Japanese Operational Codes and Minor...

  GC&CS Naval Cryptanalytic Studies Volume XIV: Japanese Operational Codes and Minor Cyphers by Lt H A L Cockerell RNVR, A R Davies, C F Linehan, Lt G M Meredith-Owens RM, Sub-Lt J O'C Morgan RNVR and J M G Pollard

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/39

• Catalogue level

  Piece

  GC&CS Army and Air Force Sigint Volume V: The Organisation and Evolution of British...

  GC&CS Army and Air Force Sigint Volume V: The Organisation and Evolution of British Air Force Sigint II by Cmdr A M S MacKenzie RNVR

  Held by

  The National Archives, Kew

  Date

  1932 Jun 21 - 1945 Aug 30

  Reference

  HW 43/48

• Catalogue level

  Piece

  GC&CS Naval Cryptanalytic Studies Volume VII: Japanese Systems II by H R Foss

  GC&CS Naval Cryptanalytic Studies Volume VII: Japanese Systems II by H R Foss

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/32

• Catalogue level

  Piece

  GC&CS Army and Air Force Sigint Volume XI: Miscellaneous Cryptographic Systems and...

  GC&CS Army and Air Force Sigint Volume XI: Miscellaneous Cryptographic Systems and their Solution by P Bartley

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/54

• Catalogue level

  Piece

  GC&CS Army and Air Force Sigint Volume XVIII: The Use of Sigint by Cmdr A M S MacKenzie...

  GC&CS Army and Air Force Sigint Volume XVIII: The Use of Sigint by Cmdr A M S MacKenzie RNVR

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/61

• Catalogue level

  Piece

  GC&CS Secret Service Sigint Volume I: Organisation and Evolution of British Secret...

  GC&CS Secret Service Sigint Volume I: Organisation and Evolution of British Secret Service Sigint. By Lieutenant-Commander L A Griffiths, RNVR

  Held by

  The National Archives, Kew

  Date

  1928 Jun 05 - 1945 Aug 30

  Reference

  HW 43/6

• Catalogue level

  Piece

  GC&CS Army and Air Force Sigint Volume VIII: German Cryptographic Systems and their...

  GC&CS Army and Air Force Sigint Volume VIII: German Cryptographic Systems and their Solution II by Lt Col F S Thompson

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/51

• Catalogue level

  Piece

  GC&CS Army and Air Force Sigint Volume IV: The Organisation and Evolution of British...

  GC&CS Army and Air Force Sigint Volume IV: The Organisation and Evolution of British Air Force Sigint I by Lt Col F S Thompson

  Held by

  The National Archives, Kew

  Date

  1914 Aug 01 - 1945 Aug 30

  Reference

  HW 43/47

• Catalogue level

  Piece

  GC&CS Naval Cryptanalytic Studies Volume III: The German Steckered Enigma II by M...

  GC&CS Naval Cryptanalytic Studies Volume III: The German Steckered Enigma II by M A Ashcroft, D W Babbage, M A Chamberlain, O H Lawn, A P Mahon, D R Nichol, R G Pendered and A L Yoxall

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/28

• Catalogue level

  Piece

  GC&CS Army and Air Force Sigint Volume III: The Organisation and Evolution of British...

  GC&CS Army and Air Force Sigint Volume III: The Organisation and Evolution of British Army Sigint III. Documents Relating to Policy and Administration

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/46

• Catalogue level

  Piece

  GC&CS Army and Air Force Sigint Volume XIV: Intelligence - Army Y Service - European...

  GC&CS Army and Air Force Sigint Volume XIV: Intelligence - Army Y Service - European by Cmdr A M S MacKenzie RNVR

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/57

• Catalogue level

  Piece

  GC&CS Naval Sigint Volume X: Japanese Cryptographic Systems and their Solution by...

  GC&CS Naval Sigint Volume X: Japanese Cryptographic Systems and their Solution by H R Foss

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/20

• Catalogue level

  Piece

  GC&CS Naval Sigint Volume I: The Organisation and Evolution of British Naval Sigint...

  GC&CS Naval Sigint Volume I: The Organisation and Evolution of British Naval Sigint by Frank Birch. Part 1 The Making of Sigint

  Held by

  The National Archives, Kew

  Date

  1914 Aug 01 - 1945 Aug 30

  Reference

  HW 43/10